Home / 21,496.10-29,664.03-12,887.15

Finding the Fourth Proportional to 21,496.10, 29,664.03 and 12,887.15

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Solution

The fourth proportional to 21,496.10, 29,664.03 and 12,887.15 is: 17,783.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,496.10 : 29,664.03 = 12,887.15 : x
  2. Step 2: Convert to fraction form
    21,496.10/29,664.03 = 12,887.15/x
  3. Step 3: Cross multiply
    21,496.10x = 29,664.03 × 12,887.15
  4. Step 4: Simplify right side
    21,496.10x = 382,284,878.37
  5. Step 5: Solve for x
    x = 382,284,878.37/21,496.10
  6. Step 6: Final answer
    x = 17,783.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.